data smoothing!

I would be grateful if you could provide me a link, a library, or a model dealing with data smoothing of a serie of data acquisition.

======> THE PROBLEM: I get a dat acquisition table in *.txt format; 4entries, the first one being time (in 1/3 second) and the third column variable of data of interest! ( actually, as a first step we need to act a "datasmoothing" of the values of this third column in ( C++,...other software), as all the packages available cannot be reliable until now for a correct data smoothing. Note: all these values are positives, flat for a first part, then decreasing to a plateau and then a recovery, versus time.

Also, the first 4 lines must be erased as they contain only characters as " reset "......."stopped"........

Comments

: DEAR READER,: : I would be grateful if you could provide me a link, a library, or a model : dealing with data smoothing of a serie of data acquisition.: : ======> THE PROBLEM: I get a dat acquisition table in *.txt format; 4: entries, : the first one being time (in 1/3 second) and the third column variable of data : of interest! ( actually, as a first step we need to act a "data: smoothing" of : the values of this third column in ( C++,...other software), as all the packages available cannot be : reliable until now for a correct data smoothing. Note: all these values are : positives, flat for a first part, then decreasing to a plateau and then a : recovery, versus time.: : Also, the first 4 lines must be erased as they contain only characters as " reset "......."stopped"........: : : I thank you for any help or suggestion that you could provide.: : Sincerely,: :

It is in fact a several columns of data and the data smoothing concerns only one column!Even by using Mathematica it is not so obvious as some I need to treat these data in an exe file from the data acquisition in *.dat format and excel cannot be used. All the values are positives, increasing, and sometimes at a random frequency you have a jump of more than 25 %, thus a kind of noise leading to an extreme difficult treatment for a fitting as some parameters have to be evaluated.

I will have a look on your suggestions.

Sincerely

THIERRYPP

: : DEAR READER,: : : : I would be grateful if you could provide me a link, a library, or a model : : dealing with data smoothing of a serie of data acquisition.: : : : ======> THE PROBLEM: I get a dat acquisition table in *.txt format; 4: : entries, : : the first one being time (in 1/3 second) and the third column variable of data : : of interest! ( actually, as a first step we need to act a "data: : smoothing" of : : the values of this third column in ( C++,...other software), as all the packages available cannot be : : reliable until now for a correct data smoothing. Note: all these values are : : positives, flat for a first part, then decreasing to a plateau and then a : : recovery, versus time.: : : : Also, the first 4 lines must be erased as they contain only characters as " reset "......."stopped"........: : : : : : I thank you for any help or suggestion that you could provide.: : : : Sincerely,: : : : : : : Here's a few links:: http://www.mrc-cbu.cam.ac.uk/Imaging/smoothing.html: http://www.vanguardsw.com/dphelp/dph00161.htm: http://lamar.colostate.edu/~pburns/wed/lab.smooth.fm.html: http://www.wolfram.com/solutions/statistics/functions/functions_smoothing.html: : To find more links, enter "data smoothing" in a search engine. It would help to know what type of data it was. What is it you're trying to do?: :